Dominant Edaphic Controls on Particulate Organic Carbon in Global Soils.

The current soil carbon paradigm puts particulate organic carbon (POC) as one of the major components of soil organic carbon worldwide, highlighting its pivotal role in carbon mitigation. In this study, we compiled a global dataset of 3418 data points of POC concentration in soils and applied empirical modeling and machine learning algorithms to investigate the spatial variation in POC concentration and its controls. The global POC concentration in topsoil (0-30 cm) is estimated as 3.

[Clinical outcomes and bone resection analysis of unilateral double-channel endoscopic technique in treating lumbar disc herniation].

Objective: To explore clinical outcomes and bone resection of interlaminar fenestration decompression and unilateral biportal endoscopic (UBE) technique in treating lumbar disc herniation(LDH).

Methods: A retrospective study was performed on 105 patients with single-level LDH treated from December 2019 to December 2021. Fifty-four patients in UBE group,including 32 males and 22 females,aged from 18 to 50 years old with an average of(38.

Finite element mechanical analysis of ipsilateral approach and contralateral approach in unilateral bilateral endoscopic spine surgery.

Background: Unilateral bilateral endoscopic spine surgery (UBE) is often performed to treat lumbar spinal stenosis and disc herniation. It has become a prominent method in endoscopic spine surgery because of its very low learning curve and broader operative field of vision. Currently, the ipsilateral approach and contralateral approach have been established for disc herniation in the foraminal area, intervertebral foramen region, or pedicle region.

Large-scale fisheries during the COVID-19 pandemic: The case of the oceangoing groundfish fleet in Norway.

Small-scale fisheries have received most of the attention in the literature investigating negative impacts of the COVID-19 pandemic on seafood production. Larger fishing vessels are often perceived to be more resilient as they are better able to alter harvest patterns in response to supply shocks than smaller, less mobile vessels. In addition, larger fishing vessels often deliver storable frozen products contributing to resiliency.

Are environmentally friendly firms more vulnerable during the COVID-19 pandemic?

The COVID-19 pandemic has affected supply and demand to a large extent. Declining demand for firms' output has caused significant financial stress for all kinds of firms worldwide. Production that requires environmental measures usually gets constrained when firms, especially small and medium-sized firms (SMEs), have difficulty in accessing credit.

Credit constraints and the severity of COVID-19 impact: Empirical evidence from enterprise surveys.

The COVID-19 pandemic decreases firm revenue and raises the demand for liquidity, resulting in increased financial stress for firms throughout the world. In attempts to mitigate the impact of the COVID-19 crisis, governments have established a range of credit programs to provide credit to firms with poor liquidity. However, the efficacy of those relief programs has been low, and the relief funds do not reach the businesses most in need of liquidity injection, indicating a need to identify firms that are the most vulnerable during the crisis.

[Kyphoplasty using an enhanced balloon expander: an experimental study].

Objective: To test the efficacy of kyphoplasty using an enhanced balloon expander in restoring the height of vertebral compression fractures (OVCF).

Methods: Fifteen lumbar vertebral bodies (L1-L5) were harvested from 3 young male fresh cadavers and separated into individual vertebral bodies with the bilateral pedicles of the vertebral arch removed. Before operation, plain X-ray films of all the vertebral bodies were obtained.